ejaculation

ejaculation

[e-jak″u-la´shun]

forcible, sudden expulsion; especially expulsion of semen from the male urethra, a reflex action that occurs as a result of sexual stimulation. adj., adj ejac´ulatory. The three components of semen are expelled in quick succession. First to emerge is a lubricating fluid produced by the bulbourethral glands in the penis; next comes a fluid released into the urethral channel by the prostate, providing a neutral medium within which the sperm cells can swim; and lastly, the spermatic fluid, which has been stored in the seminal vesicles, is likewise injected into the urethral channel and ejaculated. See also reproduction.

premature ejaculation ejaculation consistently occurring either prior to, upon, or immediately after penetration and before desired, taking into account factors such as age, novelty of the specific situation and recent frequency of sexual activity.

retrograde ejaculation ejaculation with discharge of the semen into the bladder rather than through the urethra to the outside. It often occurs after prostatectomy or spinal cord injury.

e·jac·u·la·tion

(ē-jak'yū-lā'shŭn),

The process that results in propulsion of semen from the genital ducts and urethra to the exterior; caused by the rhythmic contractions of the muscles surrounding the internal genital organs and the ischiocavernous and bulbocavernous muscles, resulting in an increase in pressure on the semen in the internal genital glands and the internal urethra. Compare: emission.

retrograde ejaculation ejaculation in which semen travels up the urethra towards the bladder instead of to the outside of the body.

ejaculation

(ĭ-jăk′yə-lā′shən)

n.

1.

a. The act of ejaculating.

b. An abrupt discharge of fluid.

c. The expulsion of seminal fluid from the urethra of the penis during orgasm.

2. A sudden short exclamation, especially a brief pious utterance or prayer.

ejaculation

[-ā′shən]

Etymology: L, ejaculari, to hurl out

the sudden emission of semen from the male urethra, usually during copulation, masturbation, or nocturnal emission. It is a reflex action in two phases. In the first phase, sperm, seminal fluid, and prostatic and bulbourethral gland secretions are moved into the urethra. In the second phase, strong spasmodic peristaltic contractions force ejaculation. The sensation of ejaculation is commonly also called orgasm. The fluid volume of the ejaculate is usually between 2 and 5 mL. Each milliliter usually contains 50 million to 150 million spermatozoa. ejaculatory[ijak'yələtôr'ē] , adj.

ejaculation

The expulsion of semen from the penis at the time of male orgasm.

ejaculation

e·jac·u·la·tion

(ē-jak'yū-lā'shŭn)

The process that results in propulsion of semen from the genital ducts and urethra to the exterior; caused by the rhythmic contractions of the muscles surrounding the internal genital organs and the ischiocavernous and bulbocavernous muscles, resulting in an increase in pressure on the semen in the internal genital glands and the internal urethra. It occurs in two phases: in the first, semen moves to the prostatic urethra; in the second, the muscles involved contract and expel the semen from the urethra. Synonym(s): ejaculatio.

[L. e-iaculo, pp. -atus, to shoot out]

ejaculation

The forceful emission of seminal fluid, caused by muscular contraction, at the time of the male ORGASM. Premature ejaculation is a common disorder. See also RETROGRADE EJACULATION.

ejaculation

the process by which SEMEN is expelled from the penis by strong muscular contractions of the urethral wall.

Ejaculation

Theprocess bywhich semen(made up in part of prostatic fluid) is ejected by the erect penis.

ejaculation

forcible, sudden expulsion; especially expulsion of semen from the male urethra, a reflex action that occurs as a result of sexual stimulation. Includes lubricating fluid from bulbourethral glands, prostatic and seminal vesicular fluids and semen. Called also seminal ejaculation.

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